The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 28, 2018
Filed:
May. 22, 2017
Applicant:
Silergy Semiconductor Technology (Hangzhou) Ltd, Hangzhou, ZheJiang Province, CN;
Inventors:
Assignee:
Silergy Semiconductor Technology (Hangzhou) LTD, Hangzhou, CN;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02M 3/335 (2006.01); H02M 1/08 (2006.01); H02M 3/28 (2006.01); H02M 7/155 (2006.01); H02M 1/00 (2006.01);
U.S. Cl.
CPC ...
H02M 1/08 (2013.01); H02M 3/285 (2013.01); H02M 3/33507 (2013.01); H02M 7/1557 (2013.01); H02M 3/33576 (2013.01); H02M 3/33592 (2013.01); H02M 2001/0003 (2013.01);
Abstract
A method of controlling a secondary-side rectifier switch of a flyback converter, can include: detecting a slope parameter of a secondary-side detection voltage along a predetermined direction, where the secondary-side detection voltage is configured to represent a voltage across a secondary winding of the flyback converter; and controlling the secondary-side rectifier switch to turn on when the slope parameter is greater than a slope parameter threshold, and a relationship between the secondary-side detection voltage and the ON threshold meets a predetermined requirement.